cpu cooler

I'm building a PC for BI. I have lucked out and got a B150 Gaming M3 1151 board for under $30 and an i5-7500 for $100 from CL. I will get a 80+ power supply, a M.2 SATA SSD for Windows and BI, and a WD Purple HDD. I'm planning to have around 6-7 cameras. Right now I only have one Dahua 4MP...